How has technology and medical understanding changed from the civil war era
to modern day?

The Civil War was a time of great social and political upheaval. It was also a time of great technological change

Explanation:

the number of calories in each pack of cookies has a greater variation than the number of calories in each pack of crackers.

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.